Is there any advantage or reason to go into a monks cell if there is no one playing that color? Say no one is playing red, if I go into the red cell is there any action I could take?

As I read this, I was thinking...

Since folks like to modify the game anyway, maybe you could put one of the suspect cards with each cell. This way, you would have to go there to see who is there. The person visiting the cell could look at the card, but it has to stay there - or it could be a first-come, first-served thing. Regular Pennace rules apply.